| Summary: | 碩士 === 國立交通大學 === 土木工程系所 === 98 === Abstract
This study applies moving least square method (MLS) to construct the time varying autoregressive with exgenous input model (TVARX) for a structure from its dynamic displacement responses and further estimates the instantaneous model parameters of the structure from the time varying coefficients of TVARX model.
Through the three-story shear structure of the numerical simulations verify the feasibility of reaction.The parameters under investigation include the order of TVARX model,nodal point,support length of exponential weighting function,and noise.The proposed approach is also employed to obtain the modal parameters of five-story steel frames and six-story frames from their measured displacement responses in shaking table tests.
This study also proposes to freedom posed by the different sub-structure system, the creation TVARX model, through the sub-structure system, the natural vibration frequency of the transient to be able to know which degrees of freedom (or what floor) may be damage.
|
|---|
